I have written to my hon. Friend about that case. Certainly as far as I know there was no involvement of the security and intelligence services whatsoever. As I explained to him, the CPS made the decision not to continue simply because the prosecution's forensic evidence did not amount to proof. The defence produced forensic evidence, and frankly, our evidence could not match it. On such a basis, as I said in my reply to him, the prosecution must be stopped. That is in the interests of defendants.